[HELP] How is the video with color rec.709 change to rec.2100?

[tauri141]

I have a video in rec.709 (that is the usual SD video 1080p) 1st image. In After Effect I can choose workspace rec.2100 PQ the video image will become dim (second image). When I save it to ProRes, the video will be just as dim, as I need it to be. I need to do the same in Hybrid. How to do this in Hybrid or maybe in ffmpeg?